eg.
Tell him which class you are in .
Do you know what he likes?
注：
(1)主、从句时态一致：
主句谓语过去时，从句相应过去时;
He answered that he was listening to me.
主句谓语现在时，从句时态任所需;
eg. He says (that) he will leave a message on my desk.
They know (that) he is working hard.
具体过去永不变，真理格言现在时;
eg.He told me that he was born in 1980.
Father told me that practice makes perfect .
(2)否定前移，及完成反意问句
在think / believe / suppose / guess / imagine / expect等动词后跟宾语从句否定式时，应转移到主句上去，完成反意问句时，应与从句主、谓保持一致。(注: 否定前移的条件是，主句主语是第一人称)
eg. I don't think you are right ,are you ?
I don't believe they have finished their work yet,have they ?
(3)运用虚拟语气的情况
在表示：
建议 suggest 、advise、propose;
要求demand 、desire、request;
决定 decide;
命令 order、command、require;
坚决主张 insist;
等动词后跟宾语从句，用(should)+v.(虚拟语气)
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